On 09/14/2009 07:47 PM, Michael S. Tsirkin wrote: > On Mon, Sep 14, 2009 at 12:08:55PM -0400, Gregory Haskins wrote: > >> For Ira's example, the addresses would represent a physical address on >> the PCI boards, and would follow any kind of relevant rules for >> converting a "GPA" to a host accessible address (even if indirectly, via >> a dma controller). >> > I don't think limiting addresses to PCI physical addresses will work > well. From what I rememeber, Ira's x86 can not initiate burst > transactions on PCI, and it's the ppc that initiates all DMA. > vhost-net would run on the PPC then. >>> But we can't let the guest specify physical addresses. >>> >> Agreed. Neither your proposal nor mine operate this way afaict. >> > But this seems to be what Ira needs. > In Ira's scenario, the "guest" (x86 host) specifies x86 physical addresses, and the ppc dmas to them. It's the virtio model without any change. A normal guest also specifis physical addresses. -- error compiling committee.c: too many arguments to function _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/virtualization
